feat: Update project structure and configuration files

backend/app/middlewares/mid_debug.go

@@ -0,0 +1,9 @@
+package middlewares
+
+import (
+	"github.com/gofiber/fiber/v3"
+)
+
+func (f *Middlewares) DebugMode(c fiber.Ctx) error {
+	return c.Next()
+}